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Full Discussion: Dynamic variable name in bash
Top Forums Shell Programming and Scripting Dynamic variable name in bash Post 302991522 by alex2005 on Sunday 12th of February 2017 06:45:44 PM
Old 02-12-2017
Hello,

Basically the above script supposed to be a short version of:
Code:
#!/bin/bash

     mkdir value1
     mkdir value2
     mkdir value3
     
     value1Value01=$(command 01 value1)
     value1Value02=$(command 02 value1)

     value2Value01=$(command 01 value2)
     value2Value02=$(command 02 value2)
     
     value3Value01=$(command 01 value3)
     value3Value02=$(command 02 value3)
     
     if [ ! -z value1Value01 ] ; then
          echo value1Value01 > file-value1Value01.err
     else
          echo "No errors in value1Value01"
     fi

     if [ ! -z value1Value02 ] ; then
          echo value1Value02 > file-value1Value02.err
     else
          echo "No errors in value1Value02"
     fi

     if [ ! -z value2Value01 ] ; then
          echo value2Value01 > file-value2Value01.err
     else
          echo "No errors in value2Value01"
     fi

     if [ ! -z value2Value02 ] ; then
          echo value2Value02 > file-value2Value02.err
     else
          echo "No errors in value2Value02"
     fi

     if [ ! -z value3Value01 ] ; then
          echo value3Value01 > file-value3Value01.err
     else
          echo "No errors in value3Value01"
     fi

     if [ ! -z value3Value02 ] ; then
          echo value3Value02 > file-value3Value02.err
     else
          echo "No errors in value3Value02"
     fi

done

I need to store the shell command results into a new variable and check if is empty,if not empty output to a file file-valueXValue0Y.err.

Code:
     
"$var2Value01=$(command 01)"
"$var2Value02=$(command 02)"

The output of the next shell commands
Code:
command 01

and
Code:
command 02

supposed to be assigned to the above variables.

Don Cragun and wisecracker are correct regarding the test commands and I have adjusted them in the detailed code.

Hopefully this time, I managed to give a better picture of what I'm trying to achieve.
 

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LEARN ABOUT DEBIAN

ml-build

ml-build(1)						      General Commands Manual						       ml-build(1)

NAME

       ml-build - for generating standalone programs

SYNOPSIS

       ml-build [ DU-options ] root-group main-function heapfile

DESCRIPTION

       This  manual  page  documents  briefly the ml-build command.  This manual page was written for the Debian distribution because the original
       program does not have a manual page.  The ml-build script is part of the SML/NJ CM (Compilation and Library Manager) that is used to gener-
       ate standalone programs.

OPTIONS

       A summary of options is included below.

       -Dname=value
	      Set CM variable to given value.

       -Dname Set CM variable to 1.

       -Uname Unset CM variable.

SEE ALSO

       sml(1), ml-lex(1), ml-makedepend(1), ml-yacc(1).
       The  programs  are  documented fully by CM: The SML/NJ Compilation and Library Manager, User Manual, Matthias Blume, which is available via
       <http://cm.bell-labs.com/cm/cs/what/smlnj/doc/CM/new.pdf>.

AUTHOR

       This manual page was written by Aaron Matthew Read <amread@nyx.net>, for the Debian GNU/Linux system (but may be used by others).

								 October 25, 2002						       ml-build(1)
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